Replace expect CLI tests with vitest + child_process

[macterra]

Summary

The CLI integration tests currently use Tcl expect scripts (tests/cli-tests/*.expect). These should be migrated to vitest using child_process.execFile, matching the rest of the test suite.

Motivation

The recent names→aliases refactoring (#59) required updating all 28 .expect files — version checks, command renames, flag changes, and a fragile help-text string comparison. This highlighted several pain points:

• Wrong language: Tests are written in Tcl, while the project is TypeScript
• No shared utilities: Every script duplicates wallet setup/teardown boilerplate
• Fragile matching: The help text test does character-by-character comparison with hardcoded spacing
• No integration with vitest: Separate test runner, separate JUnit XML generation, separate CI configuration
• expect is overkill: None of the tests use interactive TTY features (prompts, password input) — they just spawn a command and check stdout

Proposed approach

Use vitest with a thin wrapper around child_process.execFile:

import { execFile } from 'node:child_process';
import { promisify } from 'node:util';

const exec = promisify(execFile);
const archon = (...args: string[]) => exec('bash', ['archon', ...args]);

describe('alias commands', () => {
    let did: string;

    beforeAll(async () => {
        await archon('new-wallet');
        const { stdout } = await archon('create-id', '-r', 'local', 'test');
        did = stdout.trim();
    });

    afterAll(async () => {
        await exec('bash', ['admin', 'reset-db']);
    });

    it('add-alias / list-aliases / remove-alias', async () => {
        await archon('add-alias', 'qa', did);
        const { stdout } = await archon('list-aliases');
        expect(JSON.parse(stdout)).toHaveProperty('qa', did);

        await archon('remove-alias', 'qa');
        const { stdout: after } = await archon('list-aliases');
        expect(JSON.parse(after)).not.toHaveProperty('qa');
    });
});

Benefits

• Same language, same runner, same reporting as unit tests
• Shared beforeAll/afterAll replaces copy-pasted Tcl blocks
• Real assertions instead of regex + timeouts
• vitest --reporter=junit replaces the manual JUnit XML generator in run_cli_tests.sh
• Still integration tests — spawns the real CLI binary against the real server

Scope

• Migrate all 28 .expect scripts to vitest test files
• Remove run_cli_tests.sh and the cli-tests/ directory
• Update CI to run CLI tests as part of the standard vitest suite